Bugtraq mailing list archives
Re: /proc filesystem allows bypassing directory permissions on Linux
From: psz () maths usyd edu au
Date: Sun, 25 Oct 2009 10:40:09 +1100
Dear Pavel,
... that's exactly the problem.
I see, the /proc/*/fd/* objects seem "confused": are they symlinks, hardlinks, or open file descriptors? I guess should always act as the latter, where access mode flags (O_RDONLY or O_RDWR) are set at open() and not changeable afterwards in fcntl(). Any open() on them should behave as a dup(). Cheers, Paul Paul Szabo psz () maths usyd edu au http://www.maths.usyd.edu.au/u/psz/ School of Mathematics and Statistics University of Sydney Australia
Current thread:
- Re: /proc filesystem allows bypassing directory permissions on Linux, (continued)
- Re: /proc filesystem allows bypassing directory permissions on Linux Marco Verschuur (Oct 30)
- Re: /proc filesystem allows bypassing directory permissions on Linux Pavel Machek (Oct 30)
- Re: /proc filesystem allows bypassing directory permissions on Linux Marco Verschuur (Oct 30)
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- Re: /proc filesystem allows bypassing directory permissions on Linux Pavel Machek (Oct 30)
- Re: /proc filesystem allows bypassing directory permissions on Linux psz (Oct 30)
- Re: /proc filesystem allows bypassing directory permissions on Linux Jim Paris (Oct 30)
- Re: /proc filesystem allows bypassing directory permissions on Linux Marco Verschuur (Oct 30)
- Re: /proc filesystem allows bypassing directory permissions on Linux Joel Maslak (Oct 26)
- Re: /proc filesystem allows bypassing directory permissions on Linux psz (Oct 26)
- Re: /proc filesystem allows bypassing directory permissions on Linux Pavel Machek (Oct 26)
- Re: /proc filesystem allows bypassing directory permissions on Linux psz (Oct 26)
- Re: /proc filesystem allows bypassing directory permissions on Linux Dan Yefimov (Oct 26)
- Re: /proc filesystem allows bypassing directory permissions on Linux Pavel Machek (Oct 26)
- Re: /proc filesystem allows bypassing directory permissions on Linux psz (Oct 26)
- Re: /proc filesystem allows bypassing directory permissions on Linux Dan Yefimov (Oct 26)
- Re: /proc filesystem allows bypassing directory permissions on Linux Pavel Machek (Oct 26)
- Re: /proc filesystem allows bypassing directory permissions on Linux Dan Yefimov (Oct 26)
- Re: /proc filesystem allows bypassing directory permissions on Linux Pavel Machek (Oct 26)
- Re: /proc filesystem allows bypassing directory permissions on Linux Dan Yefimov (Oct 26)
- Re: /proc filesystem allows bypassing directory permissions on Linux Pavel Machek (Oct 26)
- Re: /proc filesystem allows bypassing directory permissions on Linux Dan Yefimov (Oct 26)